Printing attachment for wrapping machines



-Au .'2s, 1923. 1,466.000

. H. A. sEvlGNl-f PRINTING ATTACHMENT FOR WRAPPING MACHINES Filed March 5. 1920 2 Sheets-Sheet 1 Au 28,, 1923. l;46'6.000 I H. A. svlsu PRINTING ATTACHMENT FOR WRAPPING MACHINES Filed March 5, 1920 2 Sheets-:Sheet 2 INVENTOR .arronmsr Patented Aug. 28, 19 23.

NITED HENRI A. SEVIGN'E, OF WINTHROP, MASSACHUSETTS, ASSIGNOR TO NATIONAL BREAD WRAPPING MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A. CORPORATION OF MASSACHUSETTS.

PRINTING ATTACHMENT FOR WRAPPING MACHINES.

Application filed March 5, 1920. Serial No. 363,478.

To all whom it may concern:

Be it known that I, HENRI A. Srivrom, a citizen of the United States, and resident of Winthrop, in the county of Suffolk and State of Massachusetts, have invented cer tain new and useful Improvements in Printing Attachments for Wrapping Machines, of which the following is a specification.

This invention relates to printing mechanism and particularly to means for repeatedly applying a certain designation to a Web of paper which may then be cut into sec tions with one or more printed designations borne by each of such sections, which designation will show in the same location on all sections relatively to one end thereof although said sections automatically vary as to size during operation of the machine.

The laws of some States require that when loaves of bread are offered for sale each article shall carry a'designation of its weight. It is not feasible to clearly stamp or print the weight on the wrapper after it has been applied to the loaf, owing to the softness and irregularity of the surface ofthe loaf. The principal object of my present invention therefore is to provide a bread wrapping machine with an attachment which will enable said machine to place proper designations on the wrapping paper before it is assembled with the loaves.

A further object is to provide 'means whereby the printed matter will be applied to the wrapping paper with certainty in'such location on each wrapper section regardless of its length that when a loaf is wrapped in that section the said printed matter will be exhibited on a predetermined portion of the wrapped article where it will be visible and not concealed either by overlapping folds or by being at the bottom of the loaf.

' With these and further objects hereinafter explained in invention consists'i'n the construction an combination of parts substantially as hereinafter described and pointed out in the claims.

Of the accompanying drawings:.

Figure 1 is a plan view of a complete printing mechanism which I have applied as an attachment, to a wrap ing machine 6 the type shown in Letters granted Jan. 15,1918, and 1,412,754 granted A ril 11, 1922 toSevigne & Arnold.

igures 2- and 3 are elevations looking in atent 1,253,030

the directions of arrows 2 and 3 respectively of Figure 1, said Figures 2 and 3 also illustrating a few parts of the machine of said patent order to explain where the printlng' mechanism is located in the wrapping machine. I

Figure 4 is a sectional elevation illustratmg the variable feeding'means and the cutting means of said patents, and including the present printing mechanism, and the connections which cause the latter to operate at the proper times.

To avoid confusion of illustration each figlure omits a few parts which are shown in ct er figures.

Reference numerals are employed to indicate parts which are or may be the same as those having the same numerals in said Patent 1,412,754, and letters are employed In connection with the parts or features of my present improvements.

Referring first to Figure 4, a brie1 explanation of the construction and operation of some of the most essential parts of the machine of said patentswill be given.

Loaves of bread are supplied under a feeler 93'and are then lifted, one by one, by fingers 52, through the space betweeii walls 117, 118. A section of paper A cut from a web by knife 129 is draped over each loaf rising through said space. The sections of paper cut oil vary in length according to the sizes of loaves passing under the feeler 93. The lifting fingers are operated by mechanism within the frame 40, one shaft of said mechanism being indicated at 59.

A web of paper A passes over a drum 83 connected to a driven shaft 66, and under a vertically movable roll orseries of rolls 87 carried by a shaft 89 mounted in arms 90 of a rock'shaft 91.

The feeler 93 is carried by a joined lever 94, 98, pivoted at 95. The joint 99 permits the portion 98 of the lever to be shifted laterally. Said portion 98 has a pointedend or tip 103 to be engaged by a toothed rib 1.02

carriedby the drum 83.

A plate 104 carrying a roll 105 is hinged to swing laterally on a vertical axis, the sup port to which it is hinged being omitted to permit Figure 4 to show the printing platen b. The roll 10:") e ages a lug 106-of one of the arms 90. A l,in 107 connects the hinged plate'104 with the upper end of il lever 109 pivoted at 110 (the frame support for the and this length of time is controlled by theparticular tooth of rib 102 which engages the tip 103 of lever 98; 94. And said particular tooth of the rib is determined by the amount of rocking imparted to said lever by.

a loaf passing under the feeler J3.

The paper pushed along to a greater or' lesser extent by the drum 83 and roll 87 (according to the height to which the feeler 93 has been liftedby the particular loaf to be next wrapped) passes under a knife 129 mounted to be reciprocated in. a frame memher 123 by arms 132 of a rock shaft 133. A cam carried by shaft 114., as explained in the Patent 1,412,754, actuates one of the arms 132.

When a passing loaf lifts feeler 93 more or less according to the height of the loaf, the tip 103 of the lever member 98 is depressed more or less and is then engaged by the rib 102 which then pushes it aside. The nearer the point of engagement is to the axis of shaft 66 the longer will the lever member 98 be held aside. As long as it is aside, the roll 87 will be down on the web A and effecting feeding. At the termination of the feed, the knife 129 acts.

Referring now to Figur 1 brackets a are suitably secured to portions of the frame 40 and support a platen b and roll a, the paper asslng over the roll and platen (Fig. 3). aid brackets a also carry bearings d for the shaft 6. I

Another shaft f is supported by suitable frame brackets g supported by shafts 114, 133 (Figs. 1 and 3) the purpose of which shaft i will be presently explained.

A frame it has a yoke i at one end simply bearing or riding on shaft 6 which serves as a pivot for said frame, the other end of the frame being provided with any suitable means for removably holding any desired type form An arm of shaft f is connected by a link Z with the frame it so that as said shaft f is rocked the portion of the frame carrying the type form will be raised and lowered to make intermittent impressions upon the paper A passing over platen 5.

To rock the shaft f it is provided with a short arm m (Figs. 1 and 2) to the outer end of which is pivotally connected a rod 7% having its lower portion slotted to ride on shaft e said rod being provided. with roll raeeooo 0 entering a cam groove p in a disk Q can ried by the shafte.

Suitably mounted in the frame it is an ink reservoir 1" having its bottom 3 pivoted at t and provided with an arm 10 through which an adjusting screw 17 passes said screw being tapped into the yoke 2'. A spring 10 between the yoke and the arm it holds said arm in adjusted position. By this means the bottom 8 of the ink reservoir may be adjusted so that the edge of said bottom may act as a scraper to control the thickness of a film of ink carried by the fountain roll x carried by ashaft 3/ mounted in the frame it.

The shaft 3/ carries a gear a which meshes with a gear 5' feathered on the shaft 6. The gear Z9 has a cam groove 0 in one side of it 3) in which groove rides a roll cl carried by an arm 6 pivoted on the end of the pivot pin 17'. An arm f having a roll 9' at its outer end is pivoted at h to the lower end of arm 2. A suitably connected spring 2" acts to keep the arm f in position so that its roll g will alternately bear on fountain roll in and the type form as said arm 7"" is shifted as indicated by the full and dotted lines in Figure 3, due to the action of cam-o upon the roll of arm e".

A bar 9" (Figs. 1 and 2) bears at one end on shaft e and is connected at k to the hub of gear I) so that when the bar 9" is adjusted laterally the gear 7) will be carried with it on the shaft 6. The hub end Z of the bar j is mounted on shaft f and has a somewhat hook shaped armm extending across the hub of arm and overlapping the other end of said hub as best shown in Figure 1. When the parts are to be laterally adjusted to ensure that the printing will be effected upon the proper portion of the width of the web of paper A, the screw 'n passing through the hub of arm is is loosened and the said arm and the frame h" and parts carried thereby may then be shifted laterally. Owing to the engagement of the hook arm m with the hub of arm is as just described, such lateral adjustment as just described will, through bar 9", ensure corresponding lateral adjustment of gear 7).

The shaft 0. is suitably driven as from shaft 114: through gearing indicated by dotted lines in Figure 1.

When the mechanism illustrated is added to the machine shown in the patents referred to, and as indicated in Figure 4, the driving connections are such that the printing form y descends to the position indicated by dotted lines in Figure 2 while the roll 87 is raised and, consequently, while the paper is stationary. Therefore the printing is effected before the paper is advanced and cut, and at an exact distance from the location of that cut. The gearing and cams illustrated are so timed or related that in o oration while the paper is advancing the i 1 treesting off of that section of paper which has' just been printed is then effected as briefly explained herein and more fully in said'patent. As also explained in that patent the lengths of the different sections cut oil autornatically vary to accord with the sizes of the loaves; but since the printing effected by this added mechanism must always be at the same distance from the end of the-web A projecting between drum 83 and roll'87 which feed the paper intermittently, it will readily-be understood that the machine as a whole cuts a strip or web of paper into sections of variable length and applies printed matter to the paper in predetermined locations relatively to the length of the sections. The printing can never be so near the front or rear edge of a section as not to be visiblfe when that section is wrapped around a loa In other words, no matter what may be the size of the loaf'wrapped and the size of the wrapper section, the weight or other designations printed on the different wrappers will always show in the same relative locations on all the wrapped articles, such as sufiiciently near the centers of the tops of all the loaves to be practically uniformly visible. This enables the requisite printing to be effected with but a small fraction of the amount of ink that would necessarily be used if the ously.

By the provision for laterally adjusting the printing mechanism, the impressions can printing were efi'ected continube made on the mid-width of the web or nearer to one side or the other according to the preference of the baker.

It is to be understood that by the term printing I do not mean to limit myself to the use of type and ink, as any equivalent method of marking the paper, such as embossing or perforating, may be employed.

Having now described my invention, I claim 1. A wrapping machine having means for intermittently feeding a web of paper and cutting wrapper sections of automatically variable lengths therefrom, and printing means for applying a succession of single impressions to the paper at intervals spaced to accord with the spacing of the cuts which divide the web into sections, whereby each' section will have a single impression at a predetermined distance from an end edge thereof.

2. A wrapping machine having means for intermittently feeding a web of paper and cutting wrapper sections of automatically variable lengths therefrom, printing means for applying a succession of single impressions to the paper at intervals spaced to accord with the spacing of the'cuts which divide the web into sections, whereby each section will have asingle impression at a predetermined distance from an end edge thereof, and means for laterally adjusting said printing means.

3. The combination with a wrapping machine having means for variably feeding and cutting a web of paper to provide wrapper sections, of an attachment comprising an intermittently operative printing mechanism timed to apply a single impression to each web section at a predetermined portion thereof.

In testimony whereof I have afiixed my HENRIA. sEViGNE.

- signature. 

